Monstrosity - XXG: Put X +1/+1 counters on Polukranos; Polukranos then deals damage equal to the number of counters put onto Polukranos this way divided as you choose among any number of target creatures (or possibly fights any number of target creatures). Activate this ability only once.

Some Boros guy 1WR
Legendary
3/2

first strike, vigilance
Heroic - Whenever cardname is the target of a spell you control, creeatures you control get +1/+1, and gain trample until end of turn.

Some finer details may be different (like Polukranos' damage dealt/fight and his other abilities), but it should be somewhat accurate. Take it with a grain of salt.

Polukranos, World-Eater 2GG
Legendary Creature - HydraxxG: Monstrosity X. (If this creature isn’t monstrous, put X +1/+1 counters on it and it becomes monstrous.)
When Polukranos, World Eater becomes monstrous, it deals X damage divided as you choose among any number of target creatures your opponents control. Each of those creatures deals damage equal to its power to Polukranos.
5/5

TK EDIT: I've formatted Polukranos from my multiple notes, so it should look like this. It's not a final version, but what I've pieced together.
[QUOTE=TK-421;/comments/12009545]As best I know it's this:

Polukranos, World-Eater 2GG
Legendary Creature - HydraMonstrosity - XXG, : Put X +1/+1 counters on Polukranos. Then, Polukranos deals damage equal to the number of counters put onto Polukranos this way among any number of target creatures. Those creatures deal damage to Polukranos equal to their power. Activate this ability only if there are no counters on Polukranos.
5/5

So Monstrosity would always be direct damage? It doesn't seem like that fits green, and it would only barely work in black. If it's an ability word, maybe, but it seems awfully limited in scope if it's "delayed kicker that gives +1/+1 counters and damage."
EDIT: I guess I can believe a one-off activated ability, it's the "15 minutes of fame" version of monsterdom

So Monstrosity would always be direct damage? It doesn't seem like that fits green, and it would only barely work in black. If it's an ability word, maybe, but it seems awfully limited in scope if it's "delayed kicker that gives +1/+1 counters and trample."

So Monstrosity would always be direct damage? It doesn't seem like that fits green, and it would only barely work in black. If it's an ability word, maybe, but it seems awfully limited in scope if it's "delayed kicker that gives +1/+1 counters and trample."

I think Monstrosity more likely involves "Activate this ability only once."

Calling fake on these. Color pie is off. Also, "activate this ability only once" could lead to problems when people dispute whether or not it has been done in cases where it may not involve counters.

Also, "World Eater," which is part of Polukranos' name, sounds like LD to me. This card is a colorshifted red card that is clearly not LD.

Colorshifted how? The closest analogue I can think of off the top of my head is Hunt the Weak (with a smaller fight ability) stapled onto a Deadbridge Goliath. And I'm pretty sure that "World Eater" doesn't automatically imply land destruction.

I'm not sure what to think, but it seems just mechanically unique enough to be real. I do like the idea of monstrosity creatures acting like a final boss that levels up or changes form in the middle of the fight. The Boros legend seems fun to build around as well.

Yeah, if true the Hydra has a very nice bonus on top of being a solid 5/5 for 2GG.

I mean those saying it won't see play were doing the same dance with Deadbridge Goliath. This card in most cases is better then Deadbridge in a vacuum and will likely see more play. If this set has a likely +1/+1 counters matter due to hydras seeming to be a big thing in Theros, the card might find its way into even more decks.

Are you the reliable source or did both you and the OP see Polukranos from a third source?

Also, does Polukranos deal damage to creatures, players, or both? If it deals damage to creatures, I can see it as a very dangerous guy in Modern Pod decks...(after all, Olivia Voldaren is in currently terrible Pod colours).